Heat butter and olive oil in large pot. Sauté garlic, onion, leek, green pepper and parsnip, until veggies begin to soften. Add cumin, curry, turmeric, mustard and stir. Add potatoes and broccoli. Add broth and water. Turn up heat to medium-high and bring to a boil. Lower heat and simmer uncovered for approx 20 min, or until potatoes can be pierced easily with a fork. Add salt, to taste.